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Meth or E85, if you are putting down 700+ at 7 lbs, add one and increase the boost. You will definitely make more power and should not be at risk at higher boost levels. E85 will cost more because you either need a high end return style set up or and aux pump (if you can get away with it), but a good meth kit is not cheap either.
If your setup is put together by Lingenfelter, you might not want the cheap solution of using a meth kit since you already have a top dollar mill.
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2010 SS - On3 kit with downpipe cutout, CTR 78/80, CompCam 239/251 620/632 122+4, E85, Z28 suspension and ZL1 diff with Outlaw axles. Gen6 ZL1/1LE brakes.
2011 Vert - 416/w 230/236 .612/.602 115lsa, 1LE suspension w/32mm rear bar. Z28 diff. ZL1 brakes.
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